John 8:34
34 Jesus answered them, “Truly, truly, I say to you, geveryone who practices sin is a slave1 to sin.
Romans 6:16
16 Do you not know that if you present yourselves nto anyone as obedient slaves,1 you are slaves of the one whom you obey, either of sin, which leads to death, or of obedience, which leads to righteousness?